Hyo Eun Joo , Xi Ji , Yuya Takahashi , Misato Fujishima , Taito Miura
{"title":"asr损伤混凝土弹塑性性能及断裂机制试验研究","authors":"Hyo Eun Joo , Xi Ji , Yuya Takahashi , Misato Fujishima , Taito Miura","doi":"10.1016/j.cemconcomp.2025.106192","DOIUrl":null,"url":null,"abstract":"<div><div>The crack patterns of alkali silica reaction (ASR)-damaged concrete vary depending on many environmental factors, and the damaged concrete with dispersed crack patterns shows a compressive behavior that differs from that of cracked concrete owing to external loads, not ASR damage, despite undergoing a substantial ASR expansion. Therefore, investigating the mechanisms governing the mechanical behavior of ASR-damaged concrete is necessary. Monotonic and cyclic compression tests were conducted on ASR-damaged concrete with ASR expansion and long-term storage conditions as test variables. The elastoplastic behavior and fracture progress of the ASR-damaged concrete were investigated, and crack propagation was observed using digital image correlation (DIC) measurements. The test results showed that the compressive strength, elastic modulus, and shear elasticity of the concrete tended to decrease with increasing ASR expansion. However, the fracture parameter representing the fracture progress of the ASR-damaged concrete resembled that of the undamaged concrete. This indicates that ASR-damaged concrete with dispersed crack patterns with small widths effectively transferred stress through friction between cracks despite undergoing a large tensile strain owing to ASR. In addition, when the specimen was stored under dry conditions rather than wet conditions for over one year, the elastic modulus, compressive strength, and shear elasticity—degraded by ASR— showed improvement, while the fracture parameter remained nearly unchanged.</div></div>","PeriodicalId":9865,"journal":{"name":"Cement & concrete composites","volume":"163 ","pages":"Article 106192"},"PeriodicalIF":10.8000,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental investigations on elasto-plastic behavior and fracture mechanism of ASR-damaged concrete\",\"authors\":\"Hyo Eun Joo , Xi Ji , Yuya Takahashi , Misato Fujishima , Taito Miura\",\"doi\":\"10.1016/j.cemconcomp.2025.106192\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The crack patterns of alkali silica reaction (ASR)-damaged concrete vary depending on many environmental factors, and the damaged concrete with dispersed crack patterns shows a compressive behavior that differs from that of cracked concrete owing to external loads, not ASR damage, despite undergoing a substantial ASR expansion. Therefore, investigating the mechanisms governing the mechanical behavior of ASR-damaged concrete is necessary. Monotonic and cyclic compression tests were conducted on ASR-damaged concrete with ASR expansion and long-term storage conditions as test variables. The elastoplastic behavior and fracture progress of the ASR-damaged concrete were investigated, and crack propagation was observed using digital image correlation (DIC) measurements. The test results showed that the compressive strength, elastic modulus, and shear elasticity of the concrete tended to decrease with increasing ASR expansion. However, the fracture parameter representing the fracture progress of the ASR-damaged concrete resembled that of the undamaged concrete. This indicates that ASR-damaged concrete with dispersed crack patterns with small widths effectively transferred stress through friction between cracks despite undergoing a large tensile strain owing to ASR. In addition, when the specimen was stored under dry conditions rather than wet conditions for over one year, the elastic modulus, compressive strength, and shear elasticity—degraded by ASR— showed improvement, while the fracture parameter remained nearly unchanged.</div></div>\",\"PeriodicalId\":9865,\"journal\":{\"name\":\"Cement & concrete composites\",\"volume\":\"163 \",\"pages\":\"Article 106192\"},\"PeriodicalIF\":10.8000,\"publicationDate\":\"2025-06-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cement & concrete composites\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0958946525002744\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cement & concrete composites","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0958946525002744","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Experimental investigations on elasto-plastic behavior and fracture mechanism of ASR-damaged concrete
The crack patterns of alkali silica reaction (ASR)-damaged concrete vary depending on many environmental factors, and the damaged concrete with dispersed crack patterns shows a compressive behavior that differs from that of cracked concrete owing to external loads, not ASR damage, despite undergoing a substantial ASR expansion. Therefore, investigating the mechanisms governing the mechanical behavior of ASR-damaged concrete is necessary. Monotonic and cyclic compression tests were conducted on ASR-damaged concrete with ASR expansion and long-term storage conditions as test variables. The elastoplastic behavior and fracture progress of the ASR-damaged concrete were investigated, and crack propagation was observed using digital image correlation (DIC) measurements. The test results showed that the compressive strength, elastic modulus, and shear elasticity of the concrete tended to decrease with increasing ASR expansion. However, the fracture parameter representing the fracture progress of the ASR-damaged concrete resembled that of the undamaged concrete. This indicates that ASR-damaged concrete with dispersed crack patterns with small widths effectively transferred stress through friction between cracks despite undergoing a large tensile strain owing to ASR. In addition, when the specimen was stored under dry conditions rather than wet conditions for over one year, the elastic modulus, compressive strength, and shear elasticity—degraded by ASR— showed improvement, while the fracture parameter remained nearly unchanged.
期刊介绍:
Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.